Accelerator mechanism



New. 11 1924.

G. e. PEARCE ACCELERATOR MECHANISM Filed Aug. 6, 1923 fl n uam fm 33George G. Pearce.

4M0 anew Lug Patented Nov. 11, 1 924.

GEORGE G. PEARCE, 0 5 NEW BEDFOED, MASSACHUSETTS.

ACCELEBATGR MECHANISIM.

Application filed August 6, 1923. Serial No. 655,918.

T 0- all who-m it may concern Be it known that I, GEORGE G. PEARCE, acitizen of the United States,residing at New Bedford, county of Bristol,State of Massachusetts, have invented a certain new and usefulAccelerator Mechanism, of which the following is a full, clear, andexact description, such as will enable'others skilled in the art towhich it appertains to make and use the same, reference being had to theaccompanying drawings, forming a part of this specification.

This invention relates to accelerator mechanism and is herein shown asembodied in a throttle control. mechanism for regulating the supply offuel to an internal combustion engine.

Some makes of motor cars at the present day are not provided with a footcontrolled throttle and the throttle valve iscontrolled only by a handlever onthe steering column. This single control gets tiresome after atime and many attempts have been made to combine a foot accelerator withthe hand control. These, heretofore, have been complicated andexpensiveand require too many changes: in existing mechanism; they getout of order easily and are too troublesome to installto go into generaluse. An object of my invention, therefore, is to provide a footcontrolled accelerator mechanism which can be easily combined with ahand controlled mechanism in a mannerto avoid the above and otherdeficiencies.

To improve generally on devices of this nature, the invention alsoconsists in the various matters hereinafter described and claimed. Inthe drawings: 1

Fig, l is a perspective view of an internal combustion engine with myimproved mechanism applied.

Fig. 2 is a perspective view of a detail and Fig. 8 is a detail.

The numeral 10 designates an internal combustion engine of well knowntype with an intake pipe 12, at one, side, leading to the cylinders. Athrottle valve controlled by a throttle arm 14 is interposed in theintake pipe, said arm having an opening at the end in which is swivelleda pin 16. The pin 16 is held in the opening by a cotter pin and at itsupper end is. provided with an eye or ring 18 capable of slidingmovement, under certain conditions, along a longitudinally movable rod20 which ex t tends across between the cylinders. This rod replaces theusual rod which, in prior apparatus, is connected directly to thethrottle arm. The rod 20 has a bent end 22 pivoted to an arm 24 fixed ona rotatively adjustable shaft 26 which is journalled parallel to the,steering column 28 and has a hand control lever 30 movable over a sector32 to control the supply of fuel. 7 Passed through one end of rod 20 isa cotter pin 34 which normally engages one side of the eye or ring 18,said ring being held against the cotter pin by a yieldable member in theform of a spring 36 coiled around the rod and secured against movementat one end by a cotter pin 38. Z

Swivelled on the pin 16 is a plate 40 having an opening in which ishooked the end link of a flexible member 42, preferably a, chain. Thechain is carried around the intake pipe 12 which acts as a pulley, theother end of the chain being fastened to the lower forward. end of afoot controlled push rod 44 having a knob or pedal 46 at its upperextremity. The push rod is conveniently guided by the bent portion 48 ofa bracket plate fastened to a bar 50 which connects the intake andexhaust manifolds.

The upper end of the push rod isoifset around the rear end of the engineto bring it into a convenient position for operation and is guided by anopening in a plate 52 screwed to the foot board. 54. A spring 56 iscoiled around the push rod, one end being inserted in an opening 58 ofthe rod and the other end. in an opening 60 in the plate 52.

"Normally, the spring 56 holds the pedal elevated such that there is notension on the chain, the ring 18 being'then held against the cotter pin34 by the spring 36. Obviously, .under these conditions, movementof thethrottle lever 30 will move the throttle arm in either direction to openor close the throttle valve. Whether the valve is closed or partly open,a pull exerted on the chain by the push rod will open it further, thering 18 then sliding along the rod 20 and the spring36 yielding. If thefoot pedal is released, the spring 56 raises the push rod and the spring34'restores the valve to its original position by sliding r the l8 backagainst the'cotter ipinsi.

, anismsfor this improvement are easilypro tages are apparent; I

by reference to a specific apparatus, it should be understood that, initsbroader aspects, theinvention is not necessarily limited to v p'Qs'pring engaging the ring and urgingitto-,, wards said limiting means,a push rod ex tendingforwardly beyond said throttle arm, a'flexiblemember attachedat one'end" the structure selected for illustration. v 1ile 1. Accelerator mechanism for internal combustion "fmot or'scomprising v throttle arm, afiexible member positively connected:

to: "said 7 arm, a foot actuated slidable push rodjforj actuating the.arm' through the i flexible member,independent hand control slidablemember to actuate the throttle arm.

mechanism for. said throttle arm, said "mechanism;comprising a solidrod, a, member slidableon, the rod and swivelled'totsaid throttle arm,means on the rod to engage the positively in one direction, andyieldable means directly 'engagingthe slidab-le member to allow'said.throttle arm to be actuated independently by said push rod 2.Accelerator" mechanism "for internal "combustion motors comprising athrottle arm, a flexible member positivelyconnected to said" arm, afootactuated jpush rod hav-, ing. it rean, end offset around the motor andconnected its forward end to said flexible fmember for. actuating thearm through the fle iblamember, handjcont-rol mechanism for) saidthrottle arm, said j mechanism comprising a rod, a member. slidable onthe rod and connected to said throttle arm, a pin on one side oftheislidf ablemember, and'af spring engaging the other side of theslidable member.

3, Accelerator mechanism for internal I combustion. motors }comprising athrottle arm, a flexible member connected to said arm, a footactuatedpush rod slidablealong -& one'side of. the motor adjacent .totheI, thrOttIeanm for actuatingthe arm through the flexible member, saidrod having its rear end offset around the motor, control mechanism for,said throttle arm, sa d mechanism comprising a rod, a pin'swivelled on:said throttle armzand having a ring slidable onthe mama a spring-forurging said ring along the Although the invention has been I describedset position. v I

14L. Accelerator mechanism for internal combustion motors comprislng athrottle -zarm,'c0ntrol mechanism for thethrottle arm;

0d to anormal and comprising a'rod, a pin swivelled on said throttle armand havinga ring slidable on the rod, means for limiting the slidingmovement of the ring in one directiom a guide for slidably supportingrsaid push rod. j 5. In accelerator mechanism forinternalcombustionpmotors, a fuel intake pip'e,' ,,a

throttle valve for controlling, passage'of fueland having a throttlearm, hand .con

trol mechanismfor said throttle arm, a one .way .yieldable connection,between, said throttle arm and, hand control mechanism, a push rod, and.a flexible connection extends v intake pipe.

ing from said throttletarlmgtothe push rod, saidlflexible member beingguided by said 7 v v6. In accelerator mechanism forinternalv intake pipeat ioneside, a throttle valve for cont-rolling the passage of fuel andhaving a throttle arm, hand" control, mechanism for the 'throttlejarrn,afoot operated push ,rod 7 'extendingbetween the intakeipiple and theengine, and a flexible connection between the throttle arm and saidpush. rod.)

7'. 111 accelerator mechanism for. internal combustion eng nes, anengine having a fuel intake" pipe at oneside, a throttle valve forcontrolling the passage of fuel andhaving a throttlearm, a foot pe ate Clg between the intake pipe and thev end entering ahole in the rod andthe other between the rod and arm.

a hole in the guide plate, an d"a' connection InjteStiInony whereof.hereunto afiin EORGE PEA-non.

signature.

. combustion motors, an engine having a fuel

